Nimonic 80A (UNS N07080 / W.Nr. 2.4952, 2.4631)

Nimonic 80A (UNS N07080 / W.Nr. 2.4952, 2.4631) is a wrought, age-hardenable nickel-chromium alloy. Nimonic 80A is similar to Nimonic 75 but made precipitation hardenable by additions of aluminium and titanium. Alloy 80A has good corrosion and oxidation resistance and high tensile and creep-rupture properties at temperatures to 815℃ (1500ºF). Vacuum refined versions are also available. It is used for gas-turbine components (blades, rings, discs), bolts, tube supports in nuclear generators, exhaust valves in internal combustion engines and has many other offshore/marine, automotive and electrical applications.

Equivalent Grades

TrademarkGBGOSTASTMUNSDINW.Nr.NFBSJISSS
Nimonic 80AGH4080AN07080NiCr20TiAl2.4952
2.4631
NiCr20TiAl
NC20TA
NiCr20TiAl
N80A
NCF80A

Chemical Composition, %

AlloyCSiMnPSCrNiCoAlTiCuFe
Nimonic 80A≤0.10≤1.00≤1.00≤0.020≤0.01518.0-21.0Bal≤2.001.0-1.81.8-2.7≤0.50≤3.00

Typical Physical and Mechanical Properties (RT, Solution Annealed+Aged)

Density, g/cm3Melting Point, ℃Tensile Strength, MPaYield Strength, MPaELongation, %Hardness, HRB
8.191320-1365125078035/

Available Products and Specifications

Rod, Bar, Wire and ForgingsASTM B637, BS 3076&HR1
Plate, Sheet and StripBS HR 201
Pipe and TubeBS HR 401
Welding Product
OthersDIN 17742

Features

  • High oxidation and corrosion resistance
  • Outstanding mechanical properties after age hardening
  • Suitable for applications where elevated temperatures and continual stresses are a primary consideration
  • Good machinability
  • Easily welded

Applications

  • Gas turbine engineering
  • Automobile exhaust valves
  • Die-casting inserts and cores
  • Nuclear boiler tube parts.